UIView常见属性方法

 UIView : UIResponder  /**   *  通过一个frame来初始化一个UI控件   */  - (id)initWithFrame:(CGRect)frame;    // YES:能够跟用户进行交互  @property(nonatomic,getter=isUserInteractionEnabled) BOOL userInteractionEnabled;  // default is YES    // 控件的一个标记(父控件可以通过tag找到对应的子控件)  @property(nonatomic)                                 NSInteger tag;                // default is 0    // 图层(可以用来设置圆角效果\阴影效果)  @property(nonatomic,readonly,retain)                 CALayer  *layer;        @interface UIView(UIViewGeometry)  // 位置和尺寸(以父控件的左上角为坐标原点(0, 0))  @property(nonatomic) CGRect            frame;    // 位置和尺寸(以自己的左上角为坐标原点(0, 0))  @property(nonatomic) CGRect            bounds;    // 中点(以父控件的左上角为坐标原点(0, 0))  @property(nonatomic) CGPoint           center;          // 形变属性(平移\缩放\旋转)  @property(nonatomic) CGAffineTransform transform;   // default is CGAffineTransformIdentity    // YES:支持多点触摸  @property(nonatomic,getter=isMultipleTouchEnabled) BOOL multipleTouchEnabled;   // default is NO  @end    @interface UIView(UIViewHierarchy)  // 父控件  @property(nonatomic,readonly) UIView       *superview;    // 子控件(新添加的控件默认都在subviews数组的后面, 新添加的控件默认都显示在最上面\最顶部)  @property(nonatomic,readonly,copy) NSArray *subviews;    // 获得当前控件所在的window  @property(nonatomic,readonly) UIWindow     *window;    // 从父控件中移除一个控件  - (void)removeFromSuperview;    // 添加一个子控件(可以将子控件插入到subviews数组中index这个位置)  - (void)insertSubview:(UIView *)view atIndex:(NSInteger)index;    // 交换subviews数组中所存放子控件的位置  - (void)exchangeSubviewAtIndex:(NSInteger)index1 withSubviewAtIndex:(NSInteger)index2;    // 添加一个子控件(新添加的控件默认都在subviews数组的后面, 新添加的控件默认都显示在最上面\最顶部)  - (void)addSubview:(UIView *)view;    // 添加一个子控件view(被挡在siblingSubview的下面)  - (void)insertSubview:(UIView *)view belowSubview:(UIView *)siblingSubview;    // 添加一个子控件view(盖在siblingSubview的上面)  - (void)insertSubview:(UIView *)view aboveSubview:(UIView *)siblingSubview;    // 将某个子控件拉到最上面(最顶部)来显示  - (void)bringSubviewToFront:(UIView *)view;    // 将某个子控件拉到最下面(最底部)来显示  - (void)sendSubviewToBack:(UIView *)view;    /**系统自动调用(留给子类去实现)**/  - (void)didAddSubview:(UIView *)subview;  - (void)willRemoveSubview:(UIView *)subview;    - (void)willMoveToSuperview:(UIView *)newSuperview;  - (void)didMoveToSuperview;  - (void)willMoveToWindow:(UIWindow *)newWindow;  - (void)didMoveToWindow;  /**系统自动调用**/    // 是不是view的子控件或者子控件的子控件(是否为view的后代)  - (BOOL)isDescendantOfView:(UIView *)view;  // returns YES for self.    // 通过tag获得对应的子控件(也可以或者子控件的子控件)  - (UIView *)viewWithTag:(NSInteger)tag;     // recursive search. includes self    /**系统自动调用(留给子类去实现)**/  // 控件的frame发生改变的时候就会调用,一般在这里重写布局子控件的位置和尺寸  // 重写了这个写方法后,一定调用[super layoutSubviews];  - (void)layoutSubviews;    @end    @interface UIView(UIViewRendering)  // YES : 超出控件边框范围的内容都剪掉  @property(nonatomic)                 BOOL              clipsToBounds;    // 背景色  @property(nonatomic,copy)            UIColor          *backgroundColor; // default is nil    // 透明度(0.0~1.0)  @property(nonatomic)                 CGFloat           alpha;                      // default is 1.0    // YES:不透明  NO:透明  @property(nonatomic,getter=isOpaque) BOOL              opaque;                     // default is YES    // YES : 隐藏  NO : 显示  @property(nonatomic,getter=isHidden) BOOL              hidden;    // 内容模式  @property(nonatomic)                 UIViewContentMode contentMode;                // default is UIViewContentModeScaleToFill  @end  //动画  @interface UIView(UIViewAnimationWithBlocks)  + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion;  + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion;    + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations;  + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay usingSpringWithDamping:(CGFloat)dampingRatio initialSpringVelocity:(CGFloat)velocity options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion;  @end